title: Active compensation of large dispersion of femtosecond pulses for precision laser ranging.
abstract: We describe an active way of compensation for large dispersion induced in the femtosecond light pulses travelling in air for laser ranging. The pulse duration is consistently regulated at 250 fs by dispersion control, allowing sub-micrometer resolution in measuring long distances by means of time-of-flight measurement. This method could facilitate more reliable applications of femtosecond pulses for satellite laser ranging, laser altimetry and active LIDAR applications.
authors.affiliation: Ultrafast Optics for Ultraprecison Group, Korea Advanced Institute of Science and Technology, Daejeon, South Korea.
authors.forename: Sang-Hyun
authors.initials: SH
authors.lastname: Lee
authors.forename: Joohyung
authors.initials: J
authors.lastname: Lee
authors.forename: Young-Jin
authors.initials: YJ
authors.lastname: Kim
authors.forename: Keunwoo
authors.initials: K
authors.lastname: Lee
authors.forename: Seung-Woo
authors.initials: SW
authors.lastname: Kim
mesh_terms: D016477:Artifacts; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D008027:Light; D011825:Radar; D012542:Scattering, Radiation; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*